I solved it.
Or at least it seems so.
I create a file /etc/pm/config.d/modules with the following content:
Credits to this pages
Problems with ACPI
Need an advice for suspend
A better solution is presented in this page
, credits to them.
But now I have a new problem, after the first correct suspend, I cannot perform another suspend unless I reboot my machine.
My laptop suspends but do not recover, the screen remains black.